Action movies are (all) the 'fashion' in Hollywood these days. = Action movies are 'in fashion' in Hollywood these days.
We attended a 'fashion show'. [=a show at which people who design clothes show their new designs]
The student recited the speech 'parrot-fashion' and could not answer any questions about it.
(..) that burgundy would've been good in this house, really. Really? A guy designed his own house and built it. Oh, yeah? I wish I'd seen it. He's a fashion guy. All these fashion people were there. And, uh, there were Japanese surfers there, and the guy was playing really, really, really great music. (..)2003 Lost in Translation